Fabrication and creep properties of eutectic-composition Al2O3/YAG/YSZ sintered composites

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dc.contributor.authorHuamán-Mamani, F.A.
dc.contributor.authorJiménez-Holgado, C.
dc.contributor.authorJiménez-Melendo, M.
dc.date.accessioned2022-03-11T00:06:50Z
dc.date.available2022-03-11T00:06:50Z
dc.date.issued2021
dc.description.abstract"Three-phase alumina/YAG/yttria-stabilized cubic zirconia (YSZ) composites were fabricated by a solid-state reaction route starting from commercial powders of Al2O3, Y2O3 and monoclinic ZrO2. The final phases Al2O3, YAG and YSZ were obtained after calcination of the powder mixtures at 1400 °C. Dense bulk composites were obtained after sintering, with a homogeneous microstructure of fine and equiaxed grains with sizes of 1 μm. Compressive mechanical tests were performed at 1300–1450 °C in air at constant load and at constant initial strain rate. A brittle-to-ductile transition was found with increasing temperature. Grain boundary sliding is the main deformation mechanism in the ductile regime, characterized by a stress exponent of 2 and by the absence of dislocation activity and changes in grain morphology. Alumina seems to be the rate-controlling phase owing to the improvement in creep resistance by the presence of yttrium and zirconium of the other two phases."es_PE
dc.description.uriTrabajo académicoes_PE
dc.identifier.doi10.1016/j.jeurceramsoc.2021.07.055es_PE
dc.identifier.issn09552219
dc.identifier.urihttps://hdl.handle.net/20.500.12590/17072
dc.language.isoenges_PE
dc.publisherElsevier Ltdes_PE
dc.publisher.countryPEes_PE
dc.relationinfo:eu-repo/semantics/articlees_PE
dc.relation.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85111979529&origin=resultslist&sort=plf-f&src=s&nlo=&nlr=&nls=&sid=c0147ee94c46e56e76c75f54bcad6ea5&sot=aff&sdt=cl&cluster=scopubyr%2c%222021%22%2ct&sl=48&s=AF-ID%28%22Universidad+Cat%c3%b3lica+San+Pablo%22+60105300%29&relpos=6&citeCnt=1&searchTerm=&featureToggles=FEATURE_NEW_DOC_DETAILS_EXPORT:1es_PE
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_PE
dc.sourceUniversidad Católica San Pabloes_PE
dc.sourceRepositorio Institucional - UCSPes_PE
dc.subjectAluminaes_PE
dc.subjectComposite materiales_PE
dc.subjectCreepes_PE
dc.subjectGrain boundary slidinges_PE
dc.subjectMicrostructurees_PE
dc.subject.ocdehttps://purl.org/pe-repo/ocde/ford#2.05.04es_PE
dc.titleFabrication and creep properties of eutectic-composition Al2O3/YAG/YSZ sintered compositeses_PE
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersiones_PE
renati.typehttps://purl.org/pe-repo/renati/type#trabajoAcademico
thesis.degree.disciplineCiencias Naturaleses_PE
thesis.degree.grantorUniversidad Católica San Pablo. Departamento de Ciencias Naturaleses_PE
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